How to access y rotation of an object as a variable or value

Question

So, after many unsuccessful attempts, I've failed to put limitations on how far my camera can rotate. My query; I want to access the y variable of the transform and use the number given to turn a bool on and off.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class RotateCam : MonoBehaviour {
 
     public static bool GreaterThen;
     public static bool LessThen;
     public Vector3 yValhue;
 
 
     void Start(){
 
         GreaterThen = false;
         LessThen = false;
     }
 
     void Update () {
 
         yValhue = Vector3 (0, transform.rotation, 0);
 
 
         if (GreaterThen == false) {
             if (Input.GetKeyDown (KeyCode.LeftArrow)) {
                 transform.RotateAround (Vector3.zero, Vector3.up, 300 * Time.deltaTime * 2);
                 if (yValhue = 30) {
                     Debug.Log("Oh jeez I guess greater then is off");
 
                 }
             }
         }
         if(LessThen == false){
             if (Input.GetKeyDown (KeyCode.RightArrow)) {
                 transform.RotateAround (Vector3.zero, Vector3.down, 300 * Time.deltaTime * 2);
                 //if (yValhue = 30.0) {
                     Debug.Log ("Wow! You're not a big fool after all! Less then ain't runnin' no more.");
                     }
             //}
 
         }
         
     }
 }

I know, I know. I'm definitely new. I ONLY want to set limits on the rotation of the Y axis. Why is it so hard?? I am but a simple boy please have mercy C# gods-

But anyways, thank you in advance.

Answer 1

Answer by UnityCoach · Oct 18, 2018 at 07:54 AM

Hi, we've all been there once.

Vector3 is a struct, hence a value type. You cannot assign a struct component directly. If you did something like :

 transform.position.x += 10;

Unity would through an error and give you a hint such as "consider storing the value..". You need to do something like :

 Vector3 p = transform.position;
 p.x += 10;
 transform.position = p;

So, you can create a property to access eulerAngles (rotations are Quaternions), and limit it Y value.

 Vector3 eulerAngles
 {
     get { return transform.eulerAngles; }
     set
     {
         transform.eulerAngles = new Vector3 (value.x, Mathf.Clamp(value.y, min, max), value.z);
     }
 }

Hope this helps.

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UnityCoach · Oct 18, 2018 at 07:59 AM 0

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In your case, you could also simply check for the Y component before you Rotate the object.

 if (Input.GetKey(KeyCode.LeftArrow) && transform.eulerAngles.y > -30f)
     RotateAround ([...])
 else (Input.GetKey(KeyCode.RightArrow) && transform.eulerAngles.y < 30f)
     RotateAround ([...])

LeosanIdiot UnityCoach · Oct 21, 2018 at 01:48 AM 0

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Dude sorry for the late reply but THANK YOU SO MUCH MAN it really means a lot and my god man i'd been trying to get over that hill for weeks-

UnityCoach LeosanIdiot · Oct 21, 2018 at 11:31 AM 0

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No problem, like I said, we all struggle with something at some point. Please accept the answer to close the question if that works for you. Cheers.

How to access y rotation of an object as a variable or value

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